Installation Guide
INSTALLATION INSTRUCTIONS
for Interior Pre-Hung Doors
1
Read these installation instructions thoroughly before beginning. They 
are designed to work in most existing applications. However, existing 
conditions may require changes to these instructions. If changes are 
needed, they are made at the installer’s risk. For installations other than 
indicated in these instructions, contact a building professional.
Thank you for selecting Lowe’s
®
 ReliaBilt
®
 products. Attached are 
Lowe’s
®
 ReliaBilt
®
 recommended installation instructions for Interior 
Pre-Hung hollow core, solid core, molded, and custom carved doors. 
IMPORTANT INFORMATION AND GLOSSARY
SAFETY AND HANDLING
GLOSSARY
Head Jamb
The horizontal frame element at the top of the door.
Pre-Hung Door
An assembly consisting of the door frame and door slab where the door 
slab is already installed, or hung, in the frame.
Side Jambs
The vertical frame elements on either side of the door.
Slab
The operating part of the door assembly that swings open and closed 
inside a frame.
Estimated Install 
Time for New
Construction
First Time: 1.5 hr.
Experienced: .75 hr.
Professional: .5 hr.
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Please allow sufficient time to properly prepare the rough opening, 
install the door, and ensure its proper operation.
Not all door types may be installed into every wall condition in all 
areas. Consult your local building code official for applicable building 
codes and regulations. Local building code requirements supersede 
recommended installation instructions. Failure to install into a square, 
level and plumb condition could result in denial of warranty claims for 
operational or performance problems.
Note to Installer: Provide a copy of these instructions to the building 
owner. By installing this product, you acknowledge the terms and 
conditions of the limited warranty as part of the terms of the sale.
SAFETY
• Read and fully understand ALL manufacturers’ instructions 
before beginning.
• Do not work alone. Two or more people are required. Use safe lifting 
techniques.
• Use caution when handling glass. Broken or cracked glass can cause 
serious injury.
• Wear protective gear (e.g. safety glasses, gloves, ear protection, etc.).
• Operate hand/power tools safely and follow manufacturer’s 
operating instructions.
MATERIALS AND DOOR HANDLING 
• Allow doors to acclimate to local conditions for at least 24 hours 
before finishing. 
• Make sure the slab is secured prior to installation.
• Heed material manufacturers’ handling and application instructions.
• Do not put stress on joints, corners or frames.
• Store door in dry, well-ventilated area in vertical, leaning position to 
allow air circulation; do not stack horizontally or drag on the floor.
• Protect from exposure to direct sunlight during storage.
• Install only into vertical walls and when conditions are dry.
IF INJURY OCCURS, IMMEDIATELY SEEK MEDICAL ATTENTION!



